Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
mmm unfortunately I was too optimistic, when I zoomed in the recovered signal at the downconversion side, I recognized it is AM modulated with a tone of approximately 250 Hz frequency and ~20 mVpp.
The fact that this is approx a multiple of 50 Hz is very suspicious.
At the 5v on the down...
I believe I solved this, basically the two VCOs where delivering slightly different frequencies. By fine tunning the one at the downconversion side though its Vtune line, the two side bands consolidated into only one tone at the desired frequency.
br
thx for the replies, so basically to give a clearer picture I am attaching an image.
Checking the output of the down converted signals with SA, instead of one tone at 50 MHz, what I see is two tones, centered at 50 MHz.
Distance between 50 MHz and each tone is approximately 600KHz.
I ll...
Hi there,
I am down converting with an active mixer a modulated signal at 2.9 GHz using an LO of the same frequency, the outcome should be in theory a sine of 50 MHz. (I know this was the original IF data)
On the bench I see this sine at the output of the mixer, but issue is I see a high level...
Hi,
just researching about this point myself and it does not seem possible from the docs I found.
Only found this paper,
http://www.signalpro.biz/pointsf1.pdf
Where they show below rule of thumb
IP2 = 1dBCP + 27 dB ( sigma = 8.1 dB)
However I d not trust it, there is also a similar rule of...
So basically I can do as per attached as many times as required? I mean each s2p file should see 50 ohms, correct?
This is the way it has been measured, in that case, how to manage the union between first and second stage?
I am trying to find a fast way to have a glance to the response of two...
Hi,
I am trying to carry out an LC shunt Notch filter for 1820 MHz, BW 30 MHz and IL of around -20/30
to have it at the output of a PA to suppress some harmonics.
When I try some configurations on ADS with lumped components, looks possible, when I switch to real components with real...
is the CC2400 Power amplifier working in the linear region?Sufficiently back off from 0 dbm which seems to be the max Pout....
if this, it should discard linearity effects at the Tx....then we ll need to focus only on the receiver.
Is this for below bands LTE bands, right?
B2 1850-1910 / 1930-1990
B5 824-849 / 869-894
This is an area where I struggle to find available duplexers......
if this will ever arrive to a PCB for real measurements, the very first point to start are the s-parameters from the manufacturer.
However, if it is only for modeling purposes, that relaxes everything quite a bit.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
